Buffer overflow in Linux kernel wwan t7xx driver

1) Buffer overflow

EUVDB-ID: #VU93308

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-35909

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to memory corruption within the t7xx_pcie_mac_atr_tables_dis() and t7xx_pcie_mac_atr_cfg() functions in drivers/net/wwan/t7xx/t7xx_pcie_mac.c, within the t7xx_cldma_gpd_rx_from_q() and t7xx_cldma_txq_empty_hndl() functions in drivers/net/wwan/t7xx/t7xx_hif_cldma.c, within the t7xx_cldma_tx_addr_is_set() and t7xx_cldma_hw_set_start_addr() functions in drivers/net/wwan/t7xx/t7xx_cldma.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/beaf0e7996b79e06ccc2bdcb4442fbaeccc31200
https://git.kernel.org/stable/c/2e22c9cb618716b8e557fe17c3d4958171288082
https://git.kernel.org/stable/c/b4fdb3c197e35f655b2d9b6759ce29440eacdfda
https://git.kernel.org/stable/c/7d5a7dd5a35876f0ecc286f3602a88887a788217

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.